FSS Series Low Profile Force Sensor DESCRIPTION The FSS Series Force Sensor provides precise, reliable force The sensor package design incorporates patented modular sensing performance in a compact, commercial-grade package construction. The use of innovative elastomeric technology and at a cost effective price. The sensor features a proven sensing engineered molded plastics results in overforce capacities of technology that uses a specialized piezoresistive, up to three times the rated force. The stainless steel ball micromachined silicon sensing element. The low power, provides excellent mechanical stability and is adaptable to a unamplified, uncompensated Wheatstone bridge circuit design variety of applications. provides inherently stable mV outputs over the force range. The FSS Series Sensor delivered 20 million operations in Force sensors operate on the principle that the resistance of Mean Cycles to Failure (MCTF) reliability testing at 50°C silicon-implanted piezoresistors will increase when the [122°F]. This test determines the number of possible sensor resistors flex under any applied force. The sensor concentrates operations at full scale until failure. force from the application, through the stainless steel ball, directly to the silicon-sensing element. The amount of resistance changes in proportion to the amount of force being applied. This change in circuit resistance results in a corresponding mV output level change. FEATURES AND BENEFITS POTENTIAL APPLICATIONS  RoHS-compliant materials meet Directive 2002/95/EC Medical allows use in industries requiring regulation compliance  Infusion pumps  Low deflection (approx. 30 µm typical at full scale) helps  Ambulatory non-invasive pumps reduce measurement error  Direct mechanical coupling of the actuation ball to the  Occlusion detection sense element reduces coupling errors and keeps  Kidney dialysis machines mechanical hysteresis to a minimum  Enteral pumps  Product rating of 20 million MCTF at 25 °C [77 °F], subject to application variation, provides for consistent output over Industrial time and reduces repairs or replacements  Small size minimizes space on the printed circuit board  Load and compression sensing (PCB)  Variable tension control  Provides enhanced sensitivity without compromising  Robotic end-effectors signal integrity, resulting in low system noise and reducing  Wire bonding equipment measurement errors  Electrically ratiometric output accommodates supply voltage variations, leading to low ratiometricity error  Low voltage supply allows for use in many battery powered applications  High resistance to electrostatic discharge (ESD) meets ESD Sensitivity Classification Level 3B (8 KV), reducing special handling during assembly  Sensor output has low sensitivity to many mounting stresses

FSS Series Table 1. Performance Characteristics (At 10 ±0.01 Vdc, 25 °C [77 °F].)1 FSS005WNSX FSS010WNSX FSS015WNSX FSS020WNSX Characteristic Unit Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Force sensing range N 0 to 5 0 to 10 0 to 15 0 to 20 Excitation2 Vdc 3.3 10 12.5 3.3 10 12.5 3.3 10 12.5 3.3 10 12.5 Null offset3 mV -30 0 +30 -30 0 +30 -30 0 +30 -30 0 +30 Null shift4 mV  ±0.5   ±0.5   ±0.5   ±0.5  (25 to 0°, 25 to 50° C) Span5 mV 330 360 390 330 360 390 330 360 390 330 360 390 Linearity (BFSL)6 % span  ±0.5 - - ±0.5 - - ±0.5 - - ±0.5 - Sensitivity7 mV/V/N 6.6 7.2 7.8 3.3 3.6 3.9 2.2 2.4 2.6 1.65 1.8 1.95 Sensitivity shift8 % span  ±5.0   ±5.0   ±5.0   ±5.0  (25 °C to 0°, 25 °C to 50 °C) Repeatability9 % span  ±0.2   ±0.2   ±0.2   ±0.2  Response time ms  0.1 0.5  0.1 0.5  0.1 0.5  0.1 0.5 (10 %FS to 90 %FS) Input resistance kΩ 4.0 5.0 6.0 4.0 5.0 6.0 4.0 5.0 6.0 4.0 5.0 6.0 Output resistance kΩ 4.0 5.0 6.0 4.0 5.0 6.0 4.0 5.0 6.0 4.0 5.0 6.0 Plunger deflection µm  26   28   33   39  Overforce10 N   15   30   45   60 Notes: 1. All force-related specifications are established using dead weight or compliant force. CAUTION 2. The range of voltage excitation which can be supplied to the product to produce an output which is proportional to force but due to ratiometricity errors may not remain within the specified performance limits. EXCEEDING Non-compensated force sensors, excited by constant current (1.5 mA) instead of voltage, exhibit partial temperature compensation of span. PRODUCT 3. The output signal obtained when the zero force is applied to the sensor. Also known as "null" or "zero". OVERFORCE RATING 4. The change in the null resulting from a change in temperature. It is not a predictable error as it can shift up and down from unit to unit. Change in temperature causes the entire output curve to shift up or down along  Ensure the overforce the voltage axis. ratings given in Table 5. The algebraic difference between output signals measured at the upper and lower limits of the operating force range. Also known as "full scale output" or simply "span". 1 are not exceeded 6. The maximum deviation of product output from a straight line fitted to output measured over the operating during any phase of force range. The straight line through a set of points which minimizes the sum of the square of the deviations of each of the points from the straight line. sensor assembly to 7. The ratio of output signal change to the corresponding input force change. Sensitivity is determined by the board, as well as computing the ratio of span to the specified operating force range multiplied by the supply voltage being used. during the use of the 8. The maximum deviation in sensitivity due to changes in temperature over the operating temperature sensor in the range, relative to sensitivity measured at 25 °C. 9. The maximum difference between output readings when the same force is applied consecutively, under application. the same operating conditions, with force approaching from the same direction within the operating Failure to comply with force range. 10. The maximum force which may safely be applied to the product for it to remain in specification once force is these instructions may returned to the operating force range. Exposure to higher forces may cause permanent damage to the result in product product. Unless otherwise specified, this applies to all temperatures within the operating temperature range. damage. Table 2. Environmental Specifications Characteristic Parameter Operating temperature1 -40 °C to 85 °C [-40 °F to 185 °F] Shock qualification tested to 150 g Vibration qualification tested to 0 to 2 kHz, 20 g sine MCTF (Mean Cycles To Failure)2 20 million at 25 °C [77 °F] Output ratiometric within supply range Notes: 1. The temperature range over which the product may safely be exposed without excitation or force applied. Under these conditions the product will remain in specification after excursion to any temperatures in this range. Exposure to temperatures beyond this range may cause permanent damage to the product. 2. MCTF is a basic measure of reliability for a non-repairable device. It is the mean number of cycles to maximum operating force over which a sensor can be expected to operate until failure. The mean value is determined statistically from a probability distribution for failures based upon test data. MCTF may vary depending on the specific application in which a sensor is utilized. 2 sensing.honeywell.com

Low Profile Force Sensor Table 3. Absolute Maximum Ratings1 Characteristic Parameter Storage temperature2 -40 °C to 100 °C [-40 °F to 212 °F] Solderability3 10 s at 260 °C [500 °F] ESD Meets ESD Sensitivity Classification Level 3B Notes: 1. Absolute maximum ratings are the extreme limits that the product can withstand without damage to the product. 2. The temperature range over which the product may safely be exposed without excitation or force applied. Under these conditions, the product will remain in the specification after excursions to any temperature in this range. Exposure to temperatures beyond this range may cause permanent damage to the product. 3. The maximum temperature and time to which the product may be exposed for processing of solder electrical connections. Figure 1. Excitation Schematic (Excitation 5 Vdc Typ., 6 Vdc max.) 1. Circled numbers refer to sensor terminals (pins). 1 Pin 1 = Supply Vs (+), Pin 2 = Output Vo (+), Pin 3 = Ground Vg (-), Pin 4 = Output Vo (-) 2. The force sensor may be powered by voltage or current. Maximum supply voltage is + not to exceed 6 V. Maximum supply current is not to exceed 1.2 mA. Power is Vs- 2 +Vo- 4 applied across Pin 1 and Pin 3. 3. The sensor output should be measured as a differential voltage across Pin 2 and Pin 4 (Vo = Vo(+)-Vo(-)). The output is ratiometric to the supply voltage. 3 Shifts in supply voltage will cause shifts in output. Neither Pin 2 nor Pin 4 should be tied to ground or voltage supply. Figure 2. Sensor Mounting Dimensions (For reference only: mm/[in].) FSS005WNSX, FSS010WNSX, FSS015WNSX, FSS020WNSX Force Sensing Ball (Actuator) Range Height 0 N to 5 N 0.375 ±0.10 mm [0.0148 ±0.0039 in] 0 N to 10 N 0.452 ±0.10 mm [0. 0178 ±0.0039 in] 0 N to 15 N 0.504 ±0.10 mm [0.01984 ±0.0039 in] 0 N to 20 N 0.562 ±0.10 mm [0.0221 ±0.0039 in] Figure 3. Packaging Dimensions (For reference only.) Short Tube: 43,9 mm [1.73 Tape and Reel (mm) 1. Pocket position relative to sprocket in] long, 5 units/tube hole measured as Standard Tube: 584 mm true position of [22.99 in] long, 100 units/ pocket, not pocket tube hole. 2. 10 sprocket hole pitch cumulative tolerance is ±0.2 mm.  Camber is in compliance with EIA 481.  Ao and Bo are calculated on a plane at a distance “R” above the bottom of the pocket. Honeywell Sensing and Control 3

Order Guide Catalog Listing Description FSS005WNSB FSS Series Low Profile Force Sensor, 0 N to 5 N force range, short tube packaging FSS005WNSR FSS Series Low Profile Force Sensor, 0 N to 5 N force range, tape and reel packaging FSS005WNST FSS Series Low Profile Force Sensor, 0 N to 5 N force range, standard tube packaging FSS010WNSB FSS Series Low Profile Force Sensor, 0 N to 10 N force range, short tube packaging FSS010WNSR FSS Series Low Profile Force Sensor, 0 N to 10 N force range, tape and reel packaging FSS010WNST FSS Series Low Profile Force Sensor, 0 N to 10 N force range, standard tube packaging FSS015WNSB FSS Series Low Profile Force Sensor, 0 N to 15 N force range, short tube packaging FSS015WNSR FSS Series Low Profile Force Sensor, 0 N to 15 N force range, tape and reel packaging FSS015WNST FSS Series Low Profile Force Sensor, 0 N to 15 N force range, standard tube packaging FSS020WNSB FSS Series Low Profile Force Sensor, 0 N to 20 N force range, short tube packaging FSS020WNSR FSS Series Low Profile Force Sensor, 0 N to 20 N force range, tape and reel packaging FSS020WNST FSS Series Low Profile Force Sensor, 0 N to 20 N force range, standard tube packaging WARNING WARNING MISUSE OF DOCUMENTATION PERSONAL INJURY  The information presented in this product sheet is for DO NOT USE these products as safety or emergency stop reference only. Do not use this document as a product devices or in any other application where failure of the installation guide. product could result in personal injury.  Complete installation, operation, and maintenance Failure to comply with these instructions could result information is provided in the instructions supplied with in death or serious injury. each product. Failure to comply with these instructions could result in SALES AND SERVICE death or serious injury. Honeywell serves its customers through a worldwide network of sales offices, representatives and distributors. For WARRANTY/REMEDY application assistance, current specifications, pricing or name Honeywell warrants goods of its manufacture as being free of of the nearest Authorized Distributor, contact your local sales defective materials and faulty workmanship. Honeywell’s office or: standard product warranty applies unless agreed to otherwise by Honeywell in writing; please refer to your order E-mail: info.sc@honeywell.com acknowledgement or consult your local sales office for specific Internet: sensing.honeywell.com warranty details. If warranted goods are returned to Honeywell Phone and Fax: during the period of coverage, Honeywell will repair or replace, Asia Pacific +65 6355-2828 at its option, without charge those items it finds defective. The +65 6445-3033 Fax foregoing is buyer’s sole remedy and is in lieu of all other Europe +44 (0) 1698 481481 warranties, expressed or implied, including those of +44 (0) 1698 481676 Fax merchantability and fitness for a particular purpose. In no Latin America +1-305-805-8188 event shall Honeywell be liable for consequential, special, +1-305-883-8257 Fax or indirect damages. USA/Canada +1-800-537-6945 +1-815-235-6847 While we provide application assistance personally, through +1-815-235-6545 Fax our literature and the Honeywell web site, it is up to the customer to determine the suitability of the product in the application. Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. Sensing and Control Honeywell 1985 Douglas Drive North Golden Valley, MN 55422 080809-2-EN February 2013 sensing.honeywell.com © 2013 Honeywell International Inc. All rights reserved.

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